He often watches people _____________by.
This bus doesn’t go to the train station.I’m afraid you’ll have to________at the library and take the A52.
—Hurry up.It’s almost time for school.—Don’t worry.We are sure to be at school________.
Just before the English class,I suddenly realized that I________my English textbook at home.
—Why was he late for school yesterday?—He overslept.By the time he got to the bus stop,the bus________already________.
They heard the boys________loudly in the classroom when they passed by.